Electric hair-waving apparatus



June 5, 1928.

E. A. M GINNIS ELECTRIC HAIR WAVING APPARATUS Filed May 1926 INVEN TOR. 6% z d' W ATTORNEY Patented June 5, 1928 UNITED-STATES 'IP'ATEENIT OFFICE. I

i L nrncrnrc HAIR-WAVING APPARATUS.

App1ication filed May 4, 1926. Serial No. 106,655.

My invention relates broadly to electric hair waving apparatus but more particularly to an improved. retention spring for maintaining the adaption rod in the assembled position in the heating tube during the hair waving operation. p

The .retention springs, now commonly employed for the purpose above mentioned, are comparatively frail and invariably destroyed by. distortion when the adaption rod is removed from the heatingyelenie'nt, thereby necessitating the replacement ofthe retention spring after each hair waving operation.

Important objects of my invention are to provide a device of the type stated, in a manner as hereinafter referred to, which will automatically tighten itself in the adaption rod and in the heating tube of the apparatus, when the former is inserted in the latter, which is simple in its construction and arrangement, strong, durable and efficient in its use, conveniently detachable from the adaption rod, and comparatively inexpensive to manufacture.

With the foregoing and other objects in View which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention hereinafter disclosed can be made within the scope of what is claimed without departing from the spirit of the invention. In the drawing wherein like numerals of reference designate corresponding parts throughout the several views Figure 1 is a vertical cross sectional View of a heating element of an electric'hair wav- 4.0 ing apparatus, provided with a retainer spring constructed in accordance with the invention. 1 v

Figure 2 is a side view of the retainer spring.

Figure 3 is an enlarged side view of the retainer spring mounted in. position in the adapt-ion rod, the latter being in cross section. 1

Referring in detail to the drawing 1 denotes a heater of an electrical heating apparatus commonly employed for permanently waving hair. The heater 1 comprises the heating tube 2 which carries the heating element 3. The latter is enclosed in a suitable casing 4 fixed in position to the heating tube 2.

The-tubular adaption rod 5, adapted for coiling'thereon the hair to be waved, is in.- serted in the heating tube 2. The adaption rod 5 is maintained in the inserted position in said heating tube 2, during the hair waving operation, by means of my retention spring 6. i

The retention spring 6 is constructed from a continuous length of resilient wire bent together centrally of itslength 7, thereby providing the two vertically disposed arms, respectively indicated at 8 and 9. Tlieupper portions of the arms 8 and 9 are shaped to'form respective semi-circular head sections 10 andll which in combination con- 'stitute an annular head 12. The freeends of the head sections 10 and 11 overlap each other, as indicated at 13, at the top of the head 12. a

The lowerportion of the arms 8 and 9 are loosely turned around each other to provide a more rigid shank 14, and each of the arms 8 and 9 is formed with an offset portion, respectively indicated at 15 and 16, disposed at the upper end of the shank 14.

The retention spring 6 is detachably connected in the tubular adaption rod 5 by inserting the shank 12 in the upper end of the latter. The retention spring 6 is maintained in position in the adaption rod 5 by the tensional engagement of the offset portions 15 and 16' against the upper wall face of the rod 5, as clearly shown in Figure 3, of the drawing.

The retention spring head 12 is disposed at the upper end of the adaption rod 5 and tensionally engages the inner wall face of the heating tube 2 for maintaining the adaption rod 5 in the operative position in the latter. The contraction of the head 12 when engaging the heating tube 2 will automatically augment the tensional engagement of the shank 14 in the adaptionrod 5, as shown in the Figure 1, of the drawing. I

My improved retention spring is preferably made from comparatively heavy wire, and itsconstruction provides a substantial structure which will not become distorted from use in the manner of retention springs now 1n use. I

What I claim is:

1. In an electrical hair waving apparatus including a heating tube and tubular adaption rod therefor, of a retention spring detachably connected to said rod and having a split annular head adapted to tensionally improved In an trical hai r n pa at s,

including a heating tube and tubular adaption rod therefor, of a retention spring con-v structed from a continuous length of resilient Wire and formed to providea shank adapted for tensional engagement in the upper end of said rod, said spring having its upper end formed to provide a split annular head adapted; for tensionallyengaging the inner Wall face of said heatingtube for normally maintaining said rod in position in said heating tube.

3. In an electrical hair WZtYlIl-g apparatus including a. heatingtube and tubular adaption rod therefor, of a retention spring constructed from a continuous length of resilient Wire formed to provide a shank and an open annular head, said shank adapted to tensionally engage in said tubular adaption rod, the free ends of said resilient Wire overlapping each other in the formation of said annular head to permit of the tensional eneasem n of h erin said h atin tube for normally maintaining said adaption rod 7 in position in said heating tube.

et. In an electrical hair Waving apparatus including a heating tube and tubular adaption rod, of a, retention spring constructed from a continuous length of resilient WlIB bent together centrally of its length, and providing a pair of vertically disposed arms, the lower connected portion of said arms turned around. each other to form a shank adapted for tensional connection in saidtu bular adaption rod, the free end portions of said arms overlapping each other and in combination forming an annular head adaptedto 'tensionally engage in theheating tube to normallymaintain said adaptionrod in, position in said heating tube, the tensional engagement of said head in said-heat- 'ing tube increasing the tensional connection of said shank with said adaption rod, sub; stantially as described'and for the purpose set forth. I g g In testimony whereof-I aflix my signature EDWARD A. MGGINNIS. 

